Assertion (A): A hippopotamus has thicker legs for its size than a mouse does. Reason (R): The compressive load on the leg bones of an animal depends on its weight, which in turn varies as the cube L3 of a representative linear dimension L such as its length or height. The strength of a bone, however, depends on its cross –sectional area which for similar animals varies as L2 . A large animal must have relatively thicker leg bones than a small one because L3 increases faster than L2 (1) Both A and R are true, and R is the correct explanation of A (2) Both A and R are true, but R is not the correct explanation of A (3) A is true but R is false (4) R is true but R is false

Assertion (A): A hippopotamus has thicker legs for its size than a mou

1.	Assertion (A): A hippopotamus has thicker legs for its size than a mouse does. Reason (R): The compressive load on the leg bones of an animal depends on its weight, which in turn varies as the cube L3 of a representative linear dimension L such as its length or height. The strength of a bone, however, depends on its cross –sectional area which for similar animals varies as L2 . A large animal must have relatively thicker leg bones than a small one because L3 increases faster than L2 (1) Both A and R are true, and R is the correct explanation of A (2) Both A and R are true, but R is not the correct explanation of A (3) A is true but R is false (4) R is true but R is false
Answer» (1) Both A and R are true, and R is the correct explanation of A

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